Before: Kalyan Jyoti Sengupta, J. ( 1 ) THE Court: By this writ application the petitioner has basically challenged the action of the Joint Commissioner of Income Tax, Special range-2, (respondent No. l) purported to be under section 154/155 of 1961. After having heard Dr. Pal and learned counsel for the respondent it appears to me that the scope of the enquiry in the writ petition is restricted to whether the way action taken by the respondent No. l is permissible within the scope and purview of section 154 of the said Act or not. ( 2 ) THE notice issued under the aforesaid section is based on the following grounds as indicated in the impugned notice: "in this case the "a" Co. claimed depreciation allowance of Rs. 38. 09 lakhs for the period from 01. 01. 93 to 31. 03. 93 for the fixed assets of messers Tea Estates of India Limited and the same was allowed. Moreover. Messers Tea Estates of India Limited claimed depreciation of Rs. 2. 30,90,740/- for 01. 04. 92 to 31. 12. 92 and the same was allowed. As per Expl- 2 to section 43 (6) this allowance to messers Brook Bond Lipton India Limited is irregular. Hence, there was excess allowance of depreciation allowance to the "a" Co. " ( 3 ) SHORT fact of the case is required to be stated to understand the controversy between the parties in a better way. One M/s. Tea Estate limited was amalgamated with M/s. Brook Bond India Limited under a scheme of amalgamation sanctioned by the Hon'ble High Court at calcutta and the Hon'ble High Court at Madras on 1st January, 1993. Thereafter on 7th January, 1994 M/s. Lipton India Limited (B. B. I.) and then amalgamated company changed its name to Brook Bond Lipton india Limited. M/s. Brook Bond India Limited thereafter on 1st January, 1996 was amalgamated with the writ petitioner under the scheme of amalgamation sanctioned by this Hon'ble Court and the Hon'ble High court at Bombay. Thereafter on 7th January, 1994 M/s. Lipton India Limited (B. B. I.) and then amalgamated company changed its name to Brook Bond Lipton india Limited. M/s. Brook Bond India Limited thereafter on 1st January, 1996 was amalgamated with the writ petitioner under the scheme of amalgamation sanctioned by this Hon'ble Court and the Hon'ble High court at Bombay. On 23rd March, 1996 the Assessing Officer by his assessment order for the assessment year 1993-94 allowed the claim of depreciation on the assets, made by Brook Bond India Limited subsequent to amalgamation for the period from 15th January, 1993 to 31st March, 1993 which had hitherto been owned by Tea Estate India limited and was transferred to Brook Bond India Limited under the scheme of the amalgamation. Tea Estate India in its own assessment has been allowed depreciation on those assets for the period from 1st april, 1992 to 31st March, 1992 (prior to the date of amalgamation ). As the said assets vested in Brook Bond India Limited with effect from 1st january, 1993 and the same was used by Brook Bond India Limited during the relevant period which was less than 180 days, 50% of the normal rate of depreciation had been claimed by Brook Bond India limited and allowed by the Assessing Officer. ( 4 ) THEREAFTER on 18th November, 1998 the impugned notice was issued. Dr. Pal appearing for the petitioner submits that the Assessing officer allowed depreciation applying the correct position of law then prevailing during the relevant previous year corresponding to assessment years as mentioned in the impugned notice in favour of tea Estate India Limited as well as Brook Bond India Limited. He submits subsequently, of course, there has been a change of the law relating to the allowance of the depreciation of the block assets. The explanation referred to by the Assessing Officer was introduced much later and the same had no manner of application. ( 5 ) HE submits that thus it will appear from the language mentioned in the impugned notice that there are disputes and debatable issues relating to the law. According to him, in the name of the exercise of power of rectification this debatable issue cannot be resolved by respondent No. 1 by the proceedings initiated by the impugned notice. ( 5 ) HE submits that thus it will appear from the language mentioned in the impugned notice that there are disputes and debatable issues relating to the law. According to him, in the name of the exercise of power of rectification this debatable issue cannot be resolved by respondent No. 1 by the proceedings initiated by the impugned notice. If there is any error in application of law the same can be set right by the appropriate proceedings or manner as provided in the law not under section 154 of the said Act. The alleged error which is purported to be shown are not apparent on the face of the records to enable the respondent No. l to exercise its power for rectification under section 154 as he has sought to do. In support of his contention he has relied on a large number of decisions of this Court as well as the Supreme court viz. 263 ITR 41 (Cal.) (Viyay Mallya v. Assistant Commissioner of income-Tax), 82 ITR 50 (SC) (T. S. Balaram. Income-Tax Officer, Company circle IV, Bombay v. Volkart Brothers and Ors.), 221 ITR 557 (SC) (Poothundu plantations Private Limited v. Agricultural Income-Tax Officer and Ors.), 249 itr (SC) (Commissioner of Income Tax v. South India Bank Limited), 249 itr 491 (Cal.) (Bata India Limited v. Inspecting Assistant Commissioner of income Tax and Ors.), 91 ITR 72 (Cal.) (Income Tax Officer "g" Ward, companies District I, and Anr. v. India Foils Limited ). ( 6 ) LEARNED counsel for the Revenue contends that the notice has been issued rightly and lawfully and in proper exercise of jurisdiction. The writ petitioner in response to the said impugned notice has made representation and thus it has been submitted to the jurisdiction of the said authority whether the authority concerned has jurisdiction or not can be and in deed been decided by the respondent No. l. The contention of the writ petitioner has not been accepted by respondent no. l and the appropriate order has been passed. This Court, therefore, should not interfere with the notice nor the order passed pursuant thereto under section 154 of the said Act. The order passed by the respondent No. 1 can be challenged by appropriate proceedings as provided under the statute itself. After the final order having been passed the challenge against the notice has lost its force. This Court, therefore, should not interfere with the notice nor the order passed pursuant thereto under section 154 of the said Act. The order passed by the respondent No. 1 can be challenged by appropriate proceedings as provided under the statute itself. After the final order having been passed the challenge against the notice has lost its force. ( 7 ) IT will appear from the impugned assessment order that the assessing Officer earlier has patently applied the wrong law and allowed depreciation unjustly and illegally. A huge amount of revenue has been lost because of the misapplication of law. He contends further that the assessing Officer has absolutely ignored the provision of the explanation 2 to section 43 (6 ). The definition of written down value has been specifically provided in case of amalgamation under the aforesaid explanation and the same has not been applied. As such the action taken by the respondent No. 1 squarely comes within the purview of section 154 of the said Act. ( 8 ) I have considered the respective contentions of the learned counsels. Dr. Pal strenuously calls upon me to decide that the Assessing officer has previously correctly allowed the depreciation applying the correct law on the date of the assessment having regard to the position of the law prevailing at the time of the previous year in connection with the relevant assessment year. I think while exercising power of judicial review, I will not exceed rny limitation. My endeavour would be to examine whether the impugned notice could be issued on the basis of the statement of fact as narrated therein or not meaning thereby whether he has exercised jurisdiction lawfully on the given statements of fact. Sub-section (l) of section 154 is very clear to understand under what circumstances the rectification can be made. It is apposite to set out the language of sub-section (1) of section 154 which is as follows: "with a view to rectifying any mistake apparent from the record an Income Tax Officer referred to section 116 may, -. " ( 9 ) THEREFORE, mistake must be apparent from the records, meaning thereby no external help or either on fact or in law is required to detect such mistake. The mistake shall be so obvious that can easily be corrected, to wit arithmetical mistake, wrong quotation of section etc. " ( 9 ) THEREFORE, mistake must be apparent from the records, meaning thereby no external help or either on fact or in law is required to detect such mistake. The mistake shall be so obvious that can easily be corrected, to wit arithmetical mistake, wrong quotation of section etc. The large number of decisions have been cited and in fact it has been time and again explained with some extent of repetition by the judicial authorities. In the case of Volkart Brothers, reported in 82 1tr 50 (SC)the scope of section 154 was explained and interpreted as follows : "a mistake apparent on the record must be an obvious and patent mistake and not, something which can be established by a long drawn process of reasoning on points on which there may conceivably be two opinions. A decision on a debatable point of law is not a mistake apparent from the record. " ( 10 ) THEREAFTER a large number of decisions as quoted above by me has followed the same principle and accepted the same interpretation of the said section. In order to avoid prolixity I do not wish to repeat the ratio laid down by all the decisions. ( 11 ) EACH and every set of facts of the case stands on its own merit. Whether the aforesaid principle of law is applicable in this case or not is to be examined. Here factually the Assessing Officer has applied section 32 sub-section (l) third proviso. Whether the aforesaid provision has been correctly applied or not is a debatable issue. From the language of the impugned order as quoted above it is clear that the respondent no. l has found that allowance of the depreciation to M/s. Brook Bond lipton India Limited is irregular in view of explanation 2 to section 43 (6)of the said Act. Therefore, it is clear that the respondent No. l thinks that the explanation 2 to section 43 (6) of the said Act should have been applied and, sequelly sub-section (l) section 32 was wrongly applied. It is further clear from the affidavit-in-opposition affirmed by one Smt. Anuradha Mukherjee being the respondent No. 1 in paragraphs 6a and 6b where it is stated that both the interpretations of the Act drawn by the petitioner company is patently wrong. It is further clear from the affidavit-in-opposition affirmed by one Smt. Anuradha Mukherjee being the respondent No. 1 in paragraphs 6a and 6b where it is stated that both the interpretations of the Act drawn by the petitioner company is patently wrong. In sub-paragraph B of paragraph 6 of the said affidavit it has been stated specifically that petitioner has been given depreciation allowance by mis-interpreting the law. ( 12 ) THUS, it is clear that on the basis of the opinion of the respondent no. 1 decision of the Assessing Officer is wrong in the eye of law as such the same is sought to be rectified. Whether interpretation of the provision of law is right or wrong is per se debatable issue. This issue cannot be resolved by the official having co-ordinate jurisdiction under section 154 of the said Act as the same can not be termed to be apparent from the record. ( 13 ) GOING by the aforesaid narration of fact and discussion I think the respondent No. 1 has invoked the power illegally on the given fact. The respondent No. 2 ought not to have exercised such power, simply she has no jurisdiction unless the mistake appears to be apprarent and obvious, and for which further argument and debate are not required. ( 14 ) I, therefore, hold that the impugned notice is ultra vires the provision of section 154 of the said Act. ( 15 ) NOW question is as to whether the final order pursuant to the said impugned notice should be allowed to be sustained or not. In the decision of this Court reported in 91 ITR 72 (Cal) it is made clear that if decision is rendered pursuant to an invalid notice the subsequent action cannot stand. As such the order passed pursuant to the impugned notice is not sustainable in law and the same is set aside and quashed and I also set aside the notice. I, however make it clear that if there is a wrong decision of law or misapplication of law then the same can be set right in appropriate manner otherwise than provision of section 154 of the said Act. There will be no order as to costs. All parties are to act on a signed copy of the operative portion of this judgment and order. Writ application is accordingly disposed of.